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北京新東方酷學(xué)酷玩夏令營(yíng)：

倒裝句之部分倒裝
 
　 部分倒裝是指將謂語的一部分如助動(dòng)詞或情態(tài)倒裝至主語之前。如果句中的謂語沒有助動(dòng)詞或情態(tài)動(dòng)詞，則需添加助動(dòng)詞do, does或did，并將其置于主語之前。

　 1)　句首為否定或半否定的詞語，如no, not, never, seldom, little, hardly, at no time, in no way, not until… 等。
　　 never have i seen such a performance.
　　 nowhere will you find the answer to this question.
　　 not until the child fell asleep did the mother leave the room.
　當(dāng)not until引出主從復(fù)合句，主句倒裝，從句不倒裝。

注意： 如否定詞不在句首不倒裝。
　　 i have never seen such a performance.
　　 the mother didn't leave the room until the child fell asleep.

典型例題　　

1)　why can't i smoke here
　　 at no time___ in the meeting-room
a. is smoking permitted　　b.　smoking is permitted
c. smoking is it permitted　d.　does smoking permit
答案a. 這是一個(gè)倒裝問題。當(dāng)否定詞語置于句首以表示強(qiáng)調(diào)時(shí)，其句中的主謂須用倒裝結(jié)構(gòu)。 這些否定詞包括no, little, hardly, seldom, never, not only, not until等。本題的正常語序是 smoking is permitted in the meeting-room at no time.

2） not until the early years of the 19th century ___ what heat is.
　　 a. man did know　 b. man know　 c. didn't man know　 d. did man know
　答案d.　 看到not until…的句型，我們知道為一倒裝句，答案在c，d 中選一個(gè)。
　改寫為正常語序?yàn)�，man did not know what heat is until the early years of the 19th. 現(xiàn)在將not提前，后面就不能再用否定了,否則意思就變了。